I really enjoyed The Terror by Dan Simmons, so you could give that a try if the premise sounds interesting to you. It definitely nails the slow burn suspense/horror elements you mentioned, and I personally loved the survival horror aspects of the novel. Many of the characters were interesting to me but I wouldn't describe character development as a big feature.

Otherwise, Lock Every Door was a fun YAish listen, and more character driven.

I'm also a King fan – if you haven't read The Outsider or The Institute yet, you might like them. The Outsider has more of a true crime bent and The Institute is tonally similar to Doctor Sleep.